[quote=@POOHEAD189]

I see what you mean, but it's also kind of equally odd on the otherside of the coin. I'd type "he sucked on her titty as they fucked, and then he rubbed the cooch" and I'll laugh that I actually tried to type that seriously, but I'll feel equally unerotic when I switch it to "sucking on a mammary as they engaged coitus, and then he kneaded the vagina™."  
[/quote]


That's where imagery comes into play and really how you can tell the 'good' smut writers from the 'thinks sex is just like porn' writers. Over-explaining the actions is sometimes beneficial in a smut scene since writing sex is obviously different from doing it or even watching it. There is a way to make 'sucking on a breast' erotic to read and typically the quickest way is to relate to a sensation you want your partner - and their character - to feel. Too often you have writers just do "And then Chad sucked on Stacy's nipple" and it's like, yeah okay this isn't exactly erotic it's just routine. 

ERP isn't for everyone and I'll be the first to admit as a seasoned 'pro' at it that like 90 percent of the time it's about as erotic as grass growing. Writing erotica tends to be easier when you're doing it by yourself since you're in control of the players and their actions and feelings. It's hard to write a recipient when the partner gives them little to work with or respond to other than "Stacy moans as her nipple is sucked." 

This really got away from me but what I'm saying is that for how easy it is to write it off, good ERP is hard to do well which is why it's often hard to find good partners anywhere. It's especially hard if someone is legit trying to use it for titillation or as an aide when you're working with instant message cyber sex levels of involvement.